CALVIN KLEIN UNDERWEAR - In the early 1980s Calvin Klein changed the American market of men's underwear from one where most men's underwear was simply white, purchased in packs of three by a wife, mother or girlfriend only when they needed to be to one where the American male began to actually care about the style and fit of what he wore under his pants. At Topdrawers we offer a wide range of Calvin Klein designer mens underwear for sale online, including briefs, boxer briefs, boxer shorts and thongs along with crew-neck and v neck t-shirts and tank tops in affordable 2-packs and 3-packs.